Sash-balance.



W. S. HAMM, T.'A. LEGGE, A. H. NEWPHER & (1.1. EKBRG.

SASH BALANCE.

APPLICATION r1151) JULY 15, 1914 1,178,583. I Patented Apr. 11,1916.

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' SASH BALANCE.

APPLICATIQN FILED JULY 35, 1914.

1,178,583. I Patented Apr. 11,1916.

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W. S. HAMM, T. A. LEGGE. A. H. NEWPHER & C. J. EKBERG.

SASH BALANCE.

APPLICATION FILED IULY15.1914.

1,178,583. Patented Apr. 11, 1916.

3 SHEETS-SHEET 3.

WILLIAM S. HAMM, OF HUBBARD WOODS, A ND THOMAS A. LEGGE, ALFRED H. NEW- rnnn, AND CARL J. EKBERG, O CHICAGO, ILLINOIS, ASSIG-N'ORS To THE ADAMS & WESTLAKE COMPANY, A CORPORATION or ILLINOIS.

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' To all whom it mm concern:

Be it known that we, WILLIAM S. HAMM,

of Hubbard Woods, county of Cook, and j State of Illinois, and THOMAS A. Lncon, ALFRED H. Nnwrrmn, and CARL J. EKBERG, all of Clncago, county of Cook, and State of Illinois, and all citizens of the United States,

have invented, jointly, certain Improvements in Sash-Balances, of wh ch the follow ng is a specification, and which are illustrated in the accompanying drawings, forming a part thereof. I The inventlon relates to windows having one ormo're sliding sashes; and its object is to provide improved means for balancing the sash and for retaining it within the easing..

An embodiment. ofthe invention is herein described, and shown in the accompanying drawings in which Figure 1 is a detailelevation of a window partly in section, and some parts being broken away; Fig. 2. is a detail in perspective of a portion of the window sash and casing, and of the balancing mechanism; Fig; 3 is a detail, partly in section, of the spring 7 balance; Fig. 4 is a sectional detail on the line 44 of Flg. 1; Fig. 5 1s a sect1onal v ew on the line 5-5of Fig. 1; Fig. 6 is-a 'sectional detail on the line 6-6 of Fig. 3; Fig. 7 is a vertical sectional detail through the window casing; Fig. 8 is a detail of the edge of the sash and the end of the balancing spring mechanism; Fig. 9 is a detail longitudinal section of the end portion of the balancing device; and Fig. 10 is a detail of the sectional intermediate stop, the portions being separated.

lVhile the invention is applicable to any window provided with one or more sliding it is shown as appl ed to a double.

sashes, sash car window.

. The window casing is shown as comprising a bottom rail 10, and side members-11, 12. A pair of sashes 13, 14, are slidably mounted between suitable stops. In the present instance there is shown a springadvanced stile 15, one associated with each of the upright members of the window casing and engaging the side edges of the sashes. Outer guide stops are shown at 16, 17 the stile plate 15 being slidably mounted therebetween and held in advancedposition by springs, as 17. In car, construction I Specification of Letters Batent. Patented 1916. Appfieation filed Ju1y 15, 1914. Serial No; 851,099. V V

with instanding flanges 18, 19, which form continuations upward of the stops 16, 17

An intermediate stop is secured to the plate 15 and engages the adjacent faces of the two sashes. The upper portion of the intermediate stop is provided with an instand ing flange 21, upon the side faces of which are formed gear teeth 22, thereby providing a rack which extends upwardly through the entire range of movementjof the sash and its appurtenances. The intermediate stop is' formedof a plurality of sections The up per section20 is intended to be permanently attached to the stile plate by any suitable lneans. The lower section is removably held in place as and for the purpose hereinafter stated. i

The gear rack 22 extends down onto the upper portion or the lower section of the intermediate stop to a point below the spring controlling pinion 30. V

The sash balance comprises a helical springcarried by the sash and having one of its ends anchored thereto, its opposite end being attached to a revoluble member provided-'with a pinion which is in engagemen'twith the rack22. Such a spring is representedat 23,; and as being housed within a cylindrical casing 24, and as be:

ing-secured thereto at one end, as shown at 25'. The casing 24 is mounted upon the upper-rail 26 of the, sash, with which it co operates, and is provided at its inner end with a gudgeon 27 journaled Within a bracket 28 fixed to the sash rail. The outer end of the casing has attached thereto a shaft member 28, sleeved upon a shaft 29 and bearing a pinion 30 in mesh atall times with the rack 22.

The shaft 29" projects beyond the pinion.

30, its outer end 31 being fixedly held within a bracket 32 secured to and extend 29 fits within a block 34 fixed ing above the sash. "The inner end '33 of the sha-f within the inner end ofthe casing 24.

The outer endof the spring 23, is attached to the shaft 29, as shown at 35. By

this. arrangement as. the sash is moved the pinion 30 is rotated and with it the casing 24, thereby coiling or uncoiling the spring 23. The parts are so assembled'that when the sash is in its lowest position the spring is tightly coiled, and hence under tension, and tends to raise the sash, though prefe. .ily of insuflicient strength to lift it unaided. As the sash is drawn down from its raised position the spring is rewound.

In order that the spring may be placed under tension before the sash is inserted within the casing, a lock is provided for preventing the relative rotation of the shaft 29 and the casing 24. In the construction as she the lock comprises a circular block 36 pinned to the shaft 29, and having ratchet teeth 37 on its disk face, and a stud 88, carried by a sleeve 39 slidably mounted upon but rotating with the casing 24 and the member 28 extends inwardly through longitudinal slot 40 in the casing, and, when in one position, engages the ratchet teeth. 37, preventing the movement of the ratchet relatively to the casing to unwind the spring.

Ahelical spring l1, coiled around the casing 24:, reacts between the innerend of the sleeve 39 and a collar L2 fixed to the casing, normally holding the stud 38 in engagement with the ratchet 37. 'A lever 43, pivoted at H to the sash, bears against the outer end of the sleeve 39 and afiords means for forcing it backwardly against the resistance of'the spring 41, for the purpose of disengaging the stud 38 from the ratchet after the sash has been placed in the casing and the pinion 30 is in engagement with the rack 22. Preferably this disengagement of the stud from the ratchet is accomplished automatically by the setting of the sash. The means shown for effectmg this automatlc action comprise a latch a5, pivoted to an outstanding bracket 46 secured'to the sash and having a beveled face 4-7 for engaging the power end of the lever e3-and moving it outwardly by a cam action. A boss. 48 on the latch 45 bears against a plane portion l9 of the flange 21, whereby the latch is held in its advanced position so long as the sash remains within the casing, the boss 4L8 sliding freely along the face of the flange when the sash is raised and lowered.

For convenience of manufacture the shaft 29 may be sectional, as shown, its inner end 50 being tubular and telescopically receiving the outer end, the two parts being pinned together, as represented at 51.

For the purpose of facilitating the inser ion and removal of the outer sash, the intermediate stop may be made sectional, as described, the upper section 52 being per manentlyattached to the stile plate 15. The lower portionis preferably jointed, to flex transversely of the plane of the, window, and is shown as comprising the sections 58, 54 and 5 5. The upper end of the section 53 carries the lower portion of the rack 22,

' thereby actuating the lever 43 to disengage the stud 38 from theratchet 37 and engaging the rack 22 with the pinion. The companion sash, that is. the inner sash may be inserted and removed when the in er stop 16 is not in place. The placing of this sash in position brings the latch 45, carried by it, in contact with the plain portion of the flange 20, thus releasing the lock of the balancing spring, while the removal of the sash from its position in the casing causes the automatic locking of the spring.

The balancing of the sash is accomplished most satisfactorily by duplicating the mechanism as shown, and thereby applying the lifting action at both of its upper corners.

Vfhile we have shown anddescribed a desirable form of construction embodying the invention, the details may be variously modified within the scope of the invention.

We claim as our invention 1. In combination, a casing, a slidin sash, a cylinder rotatably mounted on th sash, a non-rotatable rod carried by the see and projecting into the cylinder, a coiled spring within the cylinder, its ends bei secured respectively to the cylinder and to the rod, a ratchet carried by the rod, a sleeve longitudinally slidable on the cylinder having a. dog engageable with the ratchet, a

inion carried by the cylinder, and a re. 1

fixed to the casing and meshing with the i pinion.

2. In combination, a casing, a slid i sash, a cylinder rotatably mounted en ti e sash, a non-rotatable rod carried by the sasl. and projecting into the cylinder, a coiled spring within the cylinder, its ends being secured respectively to the cylinder and to the rod, a ratchet carried by the rod, a sleeve longitudinally slidable on the cylinder and having a dog engageable with the ratchet. a spring normally advancin the sleeve to on gage the dog with the ratchet, a pinion carried by the cylinder, and a rack fixed to the casing and meshing with the pinion.

3. In combination, a. casing, a sliding sash, a cylinder rotatably mounted on the sash, a non-rotatable rod carried by the and projecting into the cylinder, at coil-cc spring within the cylinder, its ends being secured respectively to thecylinder and to Upon the ln assembling the F the rod, a ratchet carried by the-rod, a sleeve longitudinally slidable on the cylinder and having a dog engageable with the ratchet, a spring normally advancing the sleeve to engage the dog with the ratchet, means for retracting the sleeve, a pinion carried by the cylinder, and'a rack fixed to the casing and meshing with the pinion. 1

l. In combination, a casing, a sliding sash, a cylinder rotatably mounted on the sash, a non-rotatable rod carried by the sash and projecting into the cylinder, a coiled v springwithin the cylinder, its ends being secured respectively to the cylinder and to the rod, a. ratchet carried by the rod, a sleeve longitudinally slidable on the cylinder and having a dog engageable with the ratchet, a spring normally advancing the sleeve to engage the dog with the ratchet, means for automatically retracting the sleeve when the sash is mounted in the casing,;a pinioncarried. by the cylindenand a rack fixed to the casing and meshing with the'pinion.

In combination, a casing, 'a sliding sash, a cylinder rotatably mounted on the sash, a non-rotatable rod carried by the sash and projecting into the cylinder, a coiled spring within the cylinder, its ends being secured respectively to the cylinder and to the rod, a ratchet carried by the rod, a

sleeve longitudinally slidable on the cylinder and having a. dog engageable with the 7. In combination, a casing, a sliding sash, a counterbalancing spring carried by the sash, means for normally locking the spring when under tension, a bar mounted on the casing for holding the locking means in release position in any position of the sash.

8.1n combination, a casing, a sliding sash, a. counter-balancing spring carried by the sash, a pinion connected to one end of.

the spring, means for automatically locking the pinion against rotation, a rack bar mounted on the casing and engaging the pinion, and means actuated by the rack bar for releasing the pinion locking means.

9. In combination, a casing, a sliding 'sash, a counterbalancing spring carried by -the sash, a pinion connected to one end of the spring, means for automatically locking the pinion against rotation,

afpinion carried by the pinion against rotation, a rackbar mounted on the casing and. engaging the pinion and having a plain portion, a movable member for releasing the pinion-lock ing means, and being advanced .by and slidably engaging the-plain portion of the rack 10..In combination, a casing, a sliding sash, a counterbalancing spring carried by the sash, a pinion connected to one end of the spring, means for. automatically looking a rack bar mounted on the casing and engaging the pinj ion and having a, plain portion, .a cam member carried by the sash for releasing the pinion-lockingc meansV and being advanced by and slidably engaging the plain portion of the rackloar. V i

11. In combination, a casing, a sliding sash, acounterbalancing' spring carried by the sash, a pinlon connected to one end of the spring, means for automatically locking the pinion; against rotation, a rack bar mounted on the casing and engaging-' the pinion and having a-plain portion, a lever for releasing the pinion-locking means, and a cam imember: carried by the sash for actuating. the lever and being advanced by and slidably engagingthe plain portion of the rack bar." r

12. In combination, a pair of sliding sashes, a counterbalancing spring carried by V eachsash, a pinion attached 'to the end of each spring, a sectional center stop located between the sashes and having gear racks engageable with the two Ipinions.

13. In combination, ,a pair of sliding sashes, acounterbalancing spring carried by each sash, a pinion attached to the end of each spring, a sectional center stop located.

betwe'enthe sashes and having gear racks engageable w1th the two pinio-ns, the lower portion of the stop being composed of pivotally united sect ons. 7

14. In comblnation, a casing havlng spring- :advanced stile plates, fianges extending in',

wardly from the stile plates and forming sash stops, a pair of sashes engageable each with one of the stops, a center stop having gear racks on' its side faces, counterbalancing springs mounted on each sash, pinions connected with the springs and engageable with the gear racks.

15. In combination, a casing, two outer stops and'an intermediate stop forming runways for a pair of sashes, the inner stop be-" ing provided with a gear rack and being sectional, the lower section of such stop beingformed of a plurality of parts jointed for fiexure transverse to the plane of the window, sashes slidable in the ways, a counter-balancing spring mounted on one of the sashes, and a pinion connected with the spring and'cooperating with the gear rack.v

16. In combination, a casing, two outer stops and an intermediate stop forming runways for a pair of sashes, a pair of sashes slidable in the runways, a counterbalancing spring mounted on one of the sashes, and a pinion connected with the spring, the intermediate stop being provided with a gear rack codperating with the pinion and extending upwardly from a point below the position of the pinion when the sash is in itslowest position, such stop being sectional, the lower section carrying a part of the gear rack and being removable laterally.

17. In combination, a casing, two outer stops and an intermediate stop forming runways for a pair of sashes, a pair of sashes slidable in the runways, a counterbalancing spring mounted on one of the sashes, and a pinion connected with the spring, the intermediate stop being provided with a gear rack cooperating with the pinion and eX- tending upwardly from a point below the position of the pinion when the sash is in its lowest aosition such sto a bein sectional the lower section carrying a part of the gear rack and being jointed for fiexure transversely to the plane of the window.

18. In combination, a casing, two outer stops and an intermediate stop forming ru'nways for a pair of sashes, a pair of sashes slidable in the runways, a counterbalancing sprin mounted on one of the sashes, locking means for holding the spring under tension, and a pinion connected with the spring, the intermediate stop being providedwith a gear rack cooperating with the pinion and eX- tending upwardly from a point below the position of the pinion when the sash is in its lowered position, such stop being sectional, the lower section carrying a part of the gear rack and being removable laterally.

19. in combination, a casing, two outer stops and an intermediate stop forming runways for a pair of sashes, a pair of sashes shdable in the runways, a counterbalancing spring mounted on one of the sashes, locking means for holding the spring under tension, and a pinion connected with the spring, the intermediate stop being provided with a gear rack cooperating with the pinion and extending upwardly from a point below the position of the pinion when the sash is in its lowest position, such stop being sectional the lower section carrying a part of the gear rack and being removable laterally and being adapted to automatically release the spring-locking means when placed in position or" service.

20. In combination, a casing, a sliding sash, a cylinder rotatably mounted on the sash, a non-rotatable rod carried by the sash and projecting into the cylinder, a coiled spring within the cylinder, its ends being secured respectively to the cylinder and to the rod, a ratchet carried by the rod, a sleeve longitudinally slidable on the cylinder and having a dog normally engaged with the ratchet, a pinion carried by the cylinder, and a rack fixed to the casing and meshing with the pinion.

21. In combination, a casing having spring-advanced stile plates flanged to form outer sash stops, a sectional intermediate stop secured to each stile plate, such stop being provided with a gear rack and its lower portion. being jointed for fiexure perpendicular to the plane of the window, a pair of sashes slidably mounted each between one 0* the outer and the intermediate stops, a balancing spring carried by one of the sashes, and a pinion attached to the spring and engaging the gear rack.

WILLIAM S. HAMM. THOMAS A. LEGGE. ALFRED H. NEVVPHER. CARL J. EKBERG. Witnesses:

LOUIS V. EGGERT, WM. 0. BENSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington. D. G. 

